By Eddie Wrenn for MailOnline
Published: 10:24 EDT, 18 une 2012 | Updated: 02:48 EDT, 19 une 2012
If NASA's anticipation is correct, Antarctica ality accept been a lot warmer 20 actor years ago - if a t ter.
A -led abstraction begin that age- Antarctica was abundant warmer and ter than ahead suspected.
The team, including advisers from Louisiana State University and the University of Southern California, say the altitude was acceptable to abutment abundant frondescence - including bantam copse - forth the edges of the arctic continent.
By ytical bulb blade wax debris in debris amount samples taken from below the Ross Ice Shelf, the ysis aggregation begin summer temperatures forth the Antarctic bank 15 to 20 actor years ago were up to 11C warmer than today, with temperatures extensive as aerial as 7C.
Precipitation levels additionally were begin to be several times than today.
Sarah Feakins, an abettor abettor of Eh sciences at the USC Dornsife College, said: 'The ultimate amtion of the abstraction was to gger accept what the approaching of altitude change may attending like.
'ust as hi has a lot to advise us about the future, so does accomplished climate. This almanac shows us how abundant warmer and ter it can get about the Antarctic ice area as the altitude arrangement heats up.
'This is some of the aboriginal affirmation of aloof how abundant warmer it was.'
Scientists began to doubtable that high-latitude temperatures during the average Miocene aeon were warmer than ahead believed aback co-author Sophie Warny, abettor abettor at LSU, apparent ample quantities of pollen and algae in debris cores taken about Antarctica.
Fossils of bulb activity in Antarctica are difficult to arise by because the movement of the mive ice bedding accoutrement the landm grinds and scrapes abroad the evidence.
'Marine debris cores are ideal to attending for clues of accomplished vegetation, as the fossils deposited are adequate from ice area adces, but these are technically actual difficult to access in the Antarctic and crave all-embracing collaboration,' said Warny.
Tipped off by the pollen samples, Feakins autonomous to attending at the debris of blade wax taken from debris cores for clues. Blade wax acts as a almanac of altitude change by doenting the hydrogen isotope ratios of the baptize the bulb took up while it was alive.
'Ice cores can alone go aback about one actor years,' Feakins said. 'Sediment cores acquiesce us to go into "deep time."'
Based aloft a archetypal originally developed to yse hydrogen isotope ratios in atmospheric baptize breath abstracts from NASA's Aura spacecraft, co-author and PL scientist ung-Eun Lee created
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